Tinting liquid



Patented Jan. 5, 1932 UNITED STATES PATENT OFFICE v HERBERT PLATT, WILLIAM WHITEHEAD, AND FREDERICK J. W ILLIAMS, OI CUMBER- LAND, MARYLAND, ASSIGNORS TO CELANESE CORPORATION OF AMERICA, A COB- PORATION OI DELAWARE TIN'IYING LIQUID No Drawing.

This invention relates to a tinting fluid and method of using the same for temporarilymarking yarns during their processing.

An object of our invention is to provide a fluid for the fugitive tinting of textile yarns for the purpose of identification of the same.

A further object of our invention is to provide a tinting fluid for the temporary marking of yarns, which tinting fluid may be apm plied to the yarns while the same are running to a bobbin or other packaging device. Further objects of our invention will appear from the following detailed description.

It is a common practice in the textile art to color yarns with an easily removable dye for the purpose of identifying them as to denier, count or size, twist, number of filaments, etc., during textile operations. After a finished product is produced, the color is so removed by washing or scouring. Ordinarily simple aqueous solutions of acid dyes (sodium salts of sulfonic acids) are used for this purpose. Usually the yarn is hanked and immersed in an aqueous solution of the fugitive a dye. However, this method involves the ad ditional operations of hanking and swift windin and the extra expenses and waste entailed y these operations. If attempt is made to apply the fugitive tinting liquid by means of a wick or roller to yarns. made of certain materials and especially to cellulose acetate yarns, while they are running from bobbin to bobbin, poor results are obtained due to the fact that the yarns retain too large a ercentage of water, causing the stretching 0 yarns when of necessity hlgh tensions are employed, and in all cases whereexcessive moisture is applied while winding, subsequent loss of the moisture by evaporation, brings about an undesirable softening or slackness of the package of the yarn wound.

We have found that by using a vegetable, animal or mineral oil in the fugitive tinting fluid, the same may be ap lied to the yarn while it is running from obbin to bobbin, without causing the undesirable results set forth above.

In accordance with our invention, we prepare a tinting fluid which contains water, a 60 sulfonated oil, a-nondrying oil and a fugitive vegetable oils are preferred. We have ob- Appllcation filed March 27, 1928. Serial No. 285,221.

dye. This tinting fluid may be applied to the yarn in any suitable manner, but the reatest advantages of our invention are obtamed by applying the tinting fluid to the yarn while it is running from bobbin to bobbin by means of a wick or roller. Any suitable sulfonated oil such as Turkey red oil (sulfonated castor oil) or sulfonated olive oil may be used, but sulfonated olive oil is preferred, since this has the least tendency to leave sticky deposits on the apparatus with which the yarn comes 1n contact.

Of the nondrying oils that may be used, the nondrying mineral oils, animal oils or tained very satisfactory results with the use of a mineral oil such as paraffin or paraffin oil. As an example of an animal oil neatsfoot oil may be mentioned. Of the vegetable oils castor oil or cotton seed oil may be used. However, we have, found that the use of olive oil gives the best results.

The dyestuff that is used may be any suitable dye that produces fugitive tinting on the particular yarn that is to be identified, and which may be readily-removed.

/ The proportion of various ingredients that are used may be varied within wide limits. However, we prefer a tinting -fluid of such composition that when the same is applied to the yarn during its passage to a winding and/or twisting apparatus, the yarn does not retain more than the total of about 8% of its Weight of oil and water, since if substantially more than this amount is retained, the packages suchas cones or bobbins that are obtained are found to be soft. Generally we prefer to use a tinting fluid of such composition that only 3.5% to 5% of oil and water are retained by the yarn. Obviously the strength of the tinting fluid to obtain these results will depend on the linear speed of the yarn,

and the variations in the proportions of tinting fluid necessary to obtain a desired deposi: tion of oil and water on the yarn, may be readily ascertained for the various linear speeds of the yarn.

The proportion of oil, sulfonated oil and water may be varied within wide limits. Thus, parts of the tinting fluid may be 100 made u of from 10 to 50 parts of a mixture of non rying oil and sulfonated oil, from89 to 49 parts of water and substantially 1 part of concentrated fugitive dye or tint. The mixture of oil and 'sulfonated oil' may be varied within wide limits say, from 3- to 7 parts of sulfonated oil to 1 part of unsulfonated oil. The amount of fugitive dyestufl may be varied in accordance with the nature of the dyes, the depth of tinting desired, the nature of the yarn to be identified, and the amount of tinting fluid applied. For example, 0.5 to 1.0% of dye is suitable for the purpose of identifying yarn in the bobbin,

hank or other package For identifying in-' dividual ends in warmng, weaving and similar processes, a'concentration of about 4% or over ofthe dye in the tinting fluid is advisable. I

The tinting fluid may be applied in any suitable manner such as by immersion of the hanks in the tintin fluid by a roller or by a' wick or pad. owever, since the greatest advantages accruing from the use ofour tinting fluid is obtained by applying the same to yarn while it is running from one textile machine to'another, we prefer to apply the tinting fluid by causing the yarn to pass across a wick or pad that is dipping in or otherwise contacting with the tinting fluid,

since this method is most economical and in volves the useof a .very compact tinting fluid apparatus that may be applied to all textile machines without difliculty.

The tinting fluid may be appliedto the am while it is running from bobbin to bobbin. The expression bobbin to bobbin as used in this specificationand in the claims includes not only the literal meaning of bobbin but also includes cones, cheeses,

. hanks, pirns and other textile packages. The GXPIGSSIOII also includes the tinting of artificial yarns after their formation, but prior to their being twisted and/or wound. For instance, in the manufacture of cellulose ace- Example I A mixture of olive oil and sulfonated olive oil having the following constitution is used:

- Per cent Total oils and fatty acids 56 Unsulfonated oil 11 The tinting fluid may be made up as follows: I P

. art Mixture of olive oil and sulfonated olive 5 oil 40 Water v 59 Fugitive red tint (concentrated) 1 The fugitive tint thus made is acle'ar solution.

\ Example [1 Using the same mixture of olive oil and sulfonated. olive oil described in Example 1, a tinting fluid is made as follows:

. r t Mixed olive oil and sulfonated olive oiLfltl Water v Fugitive tint (concentrated) tate yarn by the dry spinning process, a solumachines, since the yarn is simultaneously tion of cellulose acetate in appropriate vola tile solvent such as acetone, is passed through the orifices of a spinneret in a metier or a dry spinning machine into a heated atmosphereand the filaments thus formed are drawn and wound and/or twisted onto an %preciate bobbin or capsspinning machine env the tinting fluid made in accordance wlth our mventlon 1s used in connection withthe dry spinning process, the fluid is applied to the filamentsor yarns on the metier or dry spinning machine just after their exit from the metier casing and just prior to their being twisted and/or wound. g

The yarn that may be tinted in accordance with our invention may be of any na- 1 ture. While this invention presents great advantages in the fugitive tinting of yarns containing organic derivatives of cellulose -pac ages and the expensiye method in the skein form are avoided.

'By the use of the fugitive tinting fluid on the cellulose acetate yarns while they are running from bobbin to bobbin, such operations as ainting of the packages, dipping of the of tinting It is to be understood that the foregoing details are given merely by way of illustration and that many variations may be made therein without'departing from the spirit of this invention.

Having described our invention what we claim and desire to secure by Letters Patent 1 1s:

1. A tinting fluid for the identification of I 5 yarns comprising a fugitive dyestufi, a nondrying oil and a sulfona-ted oil.

2. A tinting fluid for the identification of yarns eomprising'afugitive dyestufi, a vegetable oil and a sulfonated vegetable oil.

1o -3. A tinting fluid for the identification of yarns comprising'a fugitive dyestufl, olive oil and a sulfonated oil.

4. A tinting fluid for the identification of yarns comprising a fugitive dyestuff, olive 16 oil and a sulfonated olive oil.

5. A tinting fluid for the identification of yarns comprising a fugitive'dyestufl, castor oil and a sulfonated oil.

6. A tinting fluid for the identification of i 20 yarns comprising a fugitive dyestufl, cotton.

seed oil and a sulfonated oil.

7. A tinting fluid for the identification of yarns comprising sulfonated olive oil, olive oil, water and a fugitive dyestufl.

8. A tinting fluid for the identification of yarns comprising a fugitive dyestufl' and sulfonated olive oil.' r

9. 'A tinting fluid comprising substantially 10 to 50 parts of a mixture of olive oil and sulfonated oil, substantially 89 to 49 partsof 7 Water and substantially 1- part of fugitive dyestufl.

10. A tinting fluid in accordance with claim 9 wherein the mixture of oil and sulfonated oil contains from substantially 3 to 7 parts of sulfonated olive oilto 1 part of unsulfona-ted olive oil. 1 In testimony whereof, werhave hereunto subscribed our names. 1

40 HERBERT PLATT.

WILLIAM WHITEHEAD. FREDERICK J. WILLIAMS. 

